What is the air quality trend in Dachang?

Over the past 7 days, Dachang had an average AQI of 69 based on station measurements. The worst day was 2026-10-14 with AQI 90.

How is Dachang air quality measured?

Air quality in Dachang is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Dachang, China

Name: Dachang Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Dachang, China.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

131h

PM2.5 Station

131h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	74	20–368	33.7 µg/m³	19h	2
2026-10-19	59	13–89	17.2 µg/m³	20h	2
2026-10-18	50	20–91	14.1 µg/m³	16h	2
2026-10-17	53	34–112	14.1 µg/m³	21h	2
2026-10-16	73	33–117	22.7 µg/m³	17h	2
2026-10-15	88	63–142	29.2 µg/m³	20h	2
2026-10-14	90	53–168	31.4 µg/m³	18h	2

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